Patent GB-1304448-A (GB)
Inventor: MIYAZAKI T
IPC: D01H15/013
Filed: 1970-02-24
Abstract: 1304448 Piecing arrangements, end finding KANEBO Ltd 24 Feb 1970 [28 Feb 1969] 8731/70 Headings DID and D1J Broken yarn ends are unwound from spools for piecing up by rotating the spool, directing an air stream from the bottom to the top of the spool along a surface thereof, and sucking the air stream upwardly whereby the free yarn end is unwound from the spool and held by the air stream, and joining the yarn ends. As shown (Fig. 1 is the only figure reproduced), upon yarn breakage an automatic travelling tender is stopped adjacent the spindle. Suction pipe 17 is lowered to just above the spindle and air nozzle 15 is slid forward to be adjacent the spool 3, (Figs. 7 and 8). A lifting plate 13 carrying the nozzle 15 contacts the ring rail and follows the rise and fall thereof. As the ring rail starts to fall compressed air issues from the nozzle 15 arid it carries the broken yarn end thrown off the rotating spool 3 into the suction pipe 17 and the spindle is braked (Fig. 9). The suction pipe 17 and nozzle 15 are then retracted (Fig. 10). A stopper 30 is then slid forward to contact the ring 9 and an air stream from nozzle 29 moves the traveller 10 around the ring until it rests against the stopper 30 (Fig. 11), whereupon the stopper 30 is retracted. The yarn end held in suction pipe 17 is then threaded through the traveller by hook (40), guide lever (42) and pushing lever (44) (Figs. 12-17). Joining roller 61 is then used to carry the broken end from spool 3 to pneumatic clearer 8 to be twisted with the end 11 from a drafting device. The spindle brake is released (Fig. 18) and a cutter on roller 61 cuts off the excess yarn from the end from spool 3 to complete the joining process, and the tender 1 moves off. A winding machine (Figs. 21 and 22) can have a similar end-finding and joining arrangement but the nozzle which directs air upwardly along the spool surface is formed with a plurality of upwardly directed outlets (94). This nozzle also has a further outlet which directs an air stream onto a fan wheel mounted on the spindle base to rotate the spool during endfinding.  Sequential operation of the end finding air ducts, the traveller stopper 30, the threading up hook (40), guide lever (42) pushing lever (44) and the joining roller 61 is controlled by the cams on shaft 36 acting on wires 33, 46, 50 and 55 and rod 63. Threading yarn into traveller 10 is achieved using a hook (40) mounted on the end of rod 38. The hook (40) is moved vertically upwards to engage with the yarn end from spool 3 held in suction pipe 17 (Fig. 12A and B) and is then lowered to bring the hooked yarn to the level of the traveller 10 (Figs. 13A and B). A guide lever (42) then swings to carry the yarn end (still engaged with hook 40) into the vicinity of the traveller 10, (Figs. 14A and B). A pushing lever (44) with a traveller hanger (45) at its end then moves forward to engage the yarn with the traveller 10 (Fig. 15 A and B). Levers (42) and 44 are then retracted. Piecing yarn ends occurs when joining roller swings upwardly to carry the yarn end from the suction pipe 17 into snail guide 12 and against roller 6 and cleaner 8. Simultaneously the hook (40) is rotated to release the lower part of the yarn end, the spindle brake is released and the ends become twisted together in the cleaner duct 8 (Figs. 16A and B). Waste yarn end cutter (Figs. 5 and 6) is mounted on the joining roller 61 and is actuated upon movement thereof. When the roller 61 swings upwardly to carry the yarn end from suction pipe 17 to the cleaner, the yarn passes into V-shaped guide (61a) and the cutter jaws 67. Upon completion of the piecing of the yarn ends the rod (62) carrying the roller is moved forward (to the LHS of Fig. 5) so that inclined plate (73) closes the cutter on the yarn. In an alternative embodiment (Figs. 20 A and B) the cutter is. mounted in the suction pipe 17.